1 files changed, 12 insertions, 0 deletions
diff --git a/net/dcsctp/common/internal_types.h b/net/dcsctp/common/internal_types.h
index 4551fd17d3..b651d45d91 100644
--- a/net/dcsctp/common/internal_types.h
+++ b/net/dcsctp/common/internal_types.h
@@ -13,6 +13,7 @@
 #include <utility>
 
 #include "net/dcsctp/public/strong_alias.h"
+#include "net/dcsctp/public/types.h"
 
 namespace dcsctp {
 
@@ -34,5 +35,16 @@ using ReconfigRequestSN = StrongAlias<class ReconfigRequestSNTag, uint32_t>;
 // Verification Tag, used for packet validation.
 using VerificationTag = StrongAlias<class VerificationTagTag, uint32_t>;
 
+// Tie Tag, used as a nonce when connecting.
+using TieTag = StrongAlias<class TieTagTag, uint64_t>;
+
+// Hasher for separated ordered/unordered stream identifiers.
+struct UnorderedStreamHash {
+  size_t operator()(const std::pair<IsUnordered, StreamID>& p) const {
+    return std::hash<IsUnordered::UnderlyingType>{}(*p.first) ^
+           (std::hash<StreamID::UnderlyingType>{}(*p.second) << 1);
+  }
+};
+
 }  // namespace dcsctp
 #endif  // NET_DCSCTP_COMMON_INTERNAL_TYPES_H_